RR-C-271 Chains And Attachments, Carbon And Alloy SteelThis specification covers carbon and alloy steel chain of commercial quality together with the attachments most commonly used with this chain.

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RR-C-271F

(Application for copies should be addressed to ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from https://www.astm.org/.)

2.3 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Material.

3.1.1 Type I chain, and various types of attachments, as indicated.

3.1.1.1 General. Unless otherwise specified, the material for type I chain and the indicated attachments and attachment parts shall conform to the chemical composition shown in table I.

TABLE I. Chemical composition.

Element

Maximum percent

Type I chain and type II, III, V, VI, VII, XIII, XIV, and XV attachments and attachment parts:

Carbon Phosphorus Sulfur Silicon

0.37 1

0.05

0.35

Type IV shackles and type VII swivels: Carbon

Phosphorus Sulfur Silicon

0.45

0.04

0.045

0.35

1 Steel with carbon 0.50 (maximum percent) is permitted for attachments or attachment parts (types II, III, V, VI, and VII) provided the fabrication is done without welding.

3.1.1.2 Type I Steel.

3.1.1.2.1 Type I, class 1 alloy chain; type V, class 1, 2, 3, and 6 hooks; type VI rings; type XIII

pear-shaped links; type XIV mechanical coupling links; and type XVI chain master links.

Unless otherwise specified, type I, class 1 alloy chain; type V, class 1, 2, 3, and 6 hooks; type VI rings; type XIII pear-shaped links; type XIV mechanical coupling links; and type XVI chain master links material shall be an alloy steel made in accordance with ASTM A322, ASTM A304, or ASTM A752. The chain and attachments shall be heat-treated, as required, to produce the physical requirements as specified.